Development of an empirical model for predicting peak breach flow of landslide dams considering material composition

Shan, Yibo; Chen, Shengshui; Zhong, Qiming; Mei, Shengyao; Yang, Meng

doi:10.1007/s10346-022-01863-1

Cited by 15 publications

(3 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, the proportion of soil and stone is utilized to quantitatively represent the material composition. A landslide dam with soil (particle size < 60 mm) share exceeding 70% of the total weight is categorized as a soil dam, a dam with stone (particle size > 200 mm) share exceeding 70% total weight is categorized as a stone dam, and other landslide dams are categorized as mixed dams (Shan et al, 2022).…”

Section: Materials Composition Of Landslide Damsmentioning

confidence: 99%

See 1 more Smart Citation

Risk assessment of dammed lakes in China based on Bayesian network

Zhong

Mei

et al. 2022

Nat Hazards

Self Cite

View full text Add to dashboard Cite

Scienti c risk assessment of dammed lakes is vitally important for emergency response planning. In this study, based on the evolution process of the disaster chain, the logic topology structure of dammed lake risk was developed. Then, a quantitative risk assessment model of dammed lake employing Bayesian network is developed, which includes the three modules of dammed lake hazard evaluation, outburst ood routing simulation, and loss assessment. In the proposed model, the network nodes of each module were quanti ed through statistical data, empirical model, logical inference, and Monte Carlo method. The failure probability of a dammed lake, and the losses of life and property because of its breaching were calculated. This can be multiplied to assess the risk a dammed lake imposes after the uniformization of each loss type. Based on the socio-economic development and longevity statistics of dammed lakes, a risk level classi cation method for dammed lakes is proposed. The Baige dammed lake, which emerged in China in 2018, was chosen for a case study and risk assessment was conducted. The calculated results showed that the comprehensive risk value of Baige dammed lake is 0.7339 under the condition without manual intervention, identifying it as the extra-high level according to the classi cation. These results are in accordance with the actual condition, which corroborates the reasonability of the proposed model. This model can quickly and quantitatively evaluate the overall risk of a dammed lake and provide a reference for decision-making in a rapid emergency response scenario.

show abstract

Section: Materials Composition Of Landslide Damsmentioning

confidence: 99%

“…km2 (Cai et al, 2020b;Zhong et al, 2020;Shan et al, 2022). After inputting the relevant parameters into the Bayesian network of hazard assessment, the failure probability of Baige dammed lake was calculated at 81.3% (see Fig.12).…”

mentioning

confidence: 99%

Risk assessment of dammed lakes in China based on Bayesian network

Zhong

Mei

et al. 2022

Nat Hazards

Self Cite

View full text Add to dashboard Cite

show abstract

“…By analysing the landslide disaster of dumps for coal mining enterprises, the negative influence and hazard factors of landslide are explained directly (Jiang et al, 2022;Wang et al, 2020). In detail, the landslide flow is huge, the damage area is large, and the transport road, agricultural land, forest land, residential buildings, railway vehicles and the population pose a serious threat (Shan et al, 2022). Kanwal et al (2017) Based on the analytical hierarchy process (AHP), the final landslide susceptibility map is generated by heuristic approach, and the regional level landslide hazard is preliminarily studied in geographical information system (GIS) environment.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the disaster mechanism and dynamic evolution of a dump slope using experimental and numerical methods: Case study, Kunyang phosphate mine, China

Li,

Hou

et al. 2023

Geological Journal

View full text Add to dashboard Cite

Dump slope is mainly attributed to the deep excavation of a mine. In the present work, the dump in Kunyang phosphate mine located in Sanjia Village was investigated. The geographic and geologic settings were first studied according to the field investigation. Aiming at the actual dump scenario, a rainfall system was designed to simulate the process of dump instability induced by rainfall. The novelty lies in conducting comprehensive tests on fundamental parameters, including water content, particle size, compactness, and engineering mechanical properties, through analogous simulation experiments. In addition, the SLIDE software was adopted to analyse the dumps in each mining area and subsequently determine the sliding disaster mode of the dumps in Kunyang phosphate mine. The comparative analysis of the dumps in these different mining areas showed that the dump in No. 6 mining area has a greater factor of safety (FS) and better stability (instability will not occur). Secondly, the stability of the dumps in No. 2, No. 3 and No. 4 is better than that in No. 5, but they have not reached the ultimate equilibrium state (instability will not occur). Nevertheless, the FS of the dump in No. 1 mining area approached or even fell below 1. Thus, it is predicted that a small‐scale landslide disaster may have occurred (instability). Moreover, the dynamic evolution characteristics of dump disasters with different accumulation densities were revealed by model device tests. Finally, the obvious tube surge phenomenon before sliding was observed.

show abstract